Unmanned aerial vehicle



FIG. 1 is a front view of our ornamental design for the unmanned aerial vehicle;

FIG. 2 is a top view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a front, top perspective view thereof.

The broken lines shown in the drawings are for the purpose of illustrating portions of the article and form no part of the claimed design. 

CLAIM We claim the ornamental design for an unmanned aerial vehicle, as shown and described. 